The Collaborative International Dictionary of English v.0.48:

Peddling \Ped"dling\, a.
   1. Hawking; acting as a peddler.
      [1913 Webster]

   2. Petty; insignificant; trifling; paltry; piddling; -- now
      less common than piddling. "The miserable remains of a
      peddling commerce." --Burke.

   Syn: petty; insignificant; trifling; paltry; piddling.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Peddle \Ped"dle\, v. t. [imp. & p. p. Peddled; p. pr. & vb. n.
   Peddling.]
   To sell from place to place; to retail by carrying around
   from customer to customer; to hawk; hence, to retail in very
   small quantities; as, to peddle vegetables or tinware.
   [1913 Webster]

WordNet (r) 3.0 (2006):

peddling
    n 1: the act of selling goods for a living [syn: vending,
         peddling, hawking, vendition]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "peddling":
   Mickey Mouse, consumer preference study, consumer research,
   consumer survey, direct-mail selling, hard sell, hawking,
   high-pressure salesmanship, huckstering, jobbing,
   low-pressure salesmanship, mail-order selling, market research,
   marketing, marketing research, measly, merchandising, niggling,
   peanut, piddling, promotion, puny, retailing, sales campaign,
   sales promotion, salesmanship, selling, sellout, soft sell,
   trifling, trivial, wholesaling